Spare-tire lock



Sept 2,1925.

SPARE TIRE LOCK Fild uw' 8, 1924 'of strength.

casing of the lock and the way in which it is Secured on the clamp. In this way a good deal of complication is avoided, all the reciprocating parts of the usual locks being eliminated. The fastening of the nut to the cylinder plug direct and the tightening of the nut by the tnning of the key is largely responsible for the simplicity of this device. When the key is removed the nut is located so that it cannot be turned in either direction and vet it. is covered all around and cannot be tampered' with from the outside.

I do away entirely with the locking nl the nut so that it cannot be turned.. This, however, is no disadvantage because the nut is housed Within the casing and there is no way to get. at it to turn it but it very greatly simplifies the mechanism, as will appear.

In the form shown in Figs. 6. 7, 8 and t), some modifications are made. In this case the casing and the lock itself are not changed and I am not giving them different reference numbers` but on the end ol the plug 22 I have provided an oscillatiin.r locking bolt 30. 'lhis is ot' cylindrical .shape with a cylindrical opening ll therein covered -at the two sides by side flanges 32. These side flanges are parallel with each other as shown and project over the cylindrical passage 3l so as to receive the head 33 of the nut, 34. This head is of a general circuler shape slabbed ot to form two flat sides 85. This leaves two projecting' ends 36 with concentric outer surfaces having a diameter equal to the diameter of the recess 3l. 'Ihe distance between the sides 35 is the same as the distance between the ends of the flanges 32 with clearance. 'lherelore this nut 34 which goes on the bolt 14 can be received in this recess 3l and then when the key is turned relative to the nut, it will be locked by the flanges 3Q. 'lhis is a very prac-tical torr'i ot this invention as the nut can he tightened separately on the tire carrier and it can be made, as tight as is desired. The tightening does not have to be done with a, key but can be done with a wrench havingr any desired amount After this the lock is pnt on` In this case. also, however, the nut is entirel)y covered and concealed by the Casing. The nut is not locked against turning by the lock itself. It is the lock itself that en gages and holds the nut against removal of the lock casing or cover. The obicct is therein, by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore I do not wish to he limited to all the details of construction herein Shown and described but wliat I do claim is:-

l. In a tire locking device, the combination with a clamp for securing a rim in position and a bolt extending througl'i. the clamp, of a nutfor the holt and a lock casing entirely concealing the, nut and provided with locking devices therein for preventing the removal of the casing from the nut in an axial direction, and a, pin on the clamp extending therefrom parallel with the bolt for preventing the removal of the c'asing in a lateral direction.

2. In a tile lock` the combination with a rim clamp, and a bolt supported from the tire carrier` ot' aA nut for the bolt for holding the rim, a pin tumbler cylinderend plug, and means on said plug for holdin said nut to prevent the removal of the loc from the nut, said nut being rotatable with the plug.

3. In a device of the character described, the combination with a tire carrier and a clamp for clamping the rim of a tire thereon, of a bolt secured to the tire carrier and extending through the cla-mp and having a nut for securing the clamp to the carrier, a pin tumbler lock having a casing arranged to fit against the clamp all around and having a reces therein for receiving said nut, the plug 0f said pin tumbler lock having means for enga ing and turning the nut to Aprevent the isengagement of the lock casing from the nut and clamp.

l. ln a spare tire lot-li, the cmnliination with a lock casing having a. pin tumbler cylinder and plug therein and provided with a configuration for conforming with the shape of the spare tire clamp and having a stud for engaging said clamp `to prevent turning of the lock casing. said plug having a nut fixed thereon and rota-table therewith i'or securing the lock to a bolt on the tire carrier.

In testimony whereof I have her'unnto af fixed my signature.

MORRIS YALE. 

